Wall construction



Dec. 24, 1929. G. L. BRADSHAW WALL CONSTRUCTION Filed Nov. 8, 1926 fZU il; i

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Fatented Dec. Z4, 1929 1,

UNITED STATES GEORGE L. BRADSHAW, OF INDIANAPOLIS, INDIANA WALL CONSTRUCTION Application led November 8, 1926. Serial No. 146,868.

This invention relates to a concrete wall construction formed from slabs and poured columns, and has for its object, the formation of a fireproof wall that may be erected at a very low cost in a. minimum of time, and that may be easily and quickly varied as to length and height.

The invention is described in reference to the accompanying drawing, in which- Fig. 1, is a side elevation of a simple building embodying the invention;

Fig. 2, is a vertical section on the line 2-2 in Fig. 1, through two of the slabs;

Fig. 3, a transverse section through the wall of the building on the line 3--3 in Fig. 1

Fig. 4, a fragmentary side elevation of the same wall in process of construction;

Fig. 5, a transverse section through one of the column molds on the line 5-5 in Fig. 4; and

Fig. 6, a similar section through one of the molds but on the line 6-6 in Fig. 4.

Like characters of reference indicate like parts throughout the several views of the drawing.

A foundation 10 of a size conforming to the plan of the building to be erected is constructed, and a plurality of column molds 11 are positioned vertically about the foundation, and supported temporarily by any suitable brace or scadold means, not here shown.

Each of the molds 11 are in two longitudinal and vertical sections 12, here shown as substantially U-shaped in cross-section, whereby an approximate rectangular space is defined between. Normally, these two sections 12 are spaced apart by a plurality of blocks 13, and the sections 12 are clampe together on these blocks 13 by bolts 14 passed through the flanges 15 outwardly projecting from the sections 12, see Figs. 4 and 6. Corner molds 16 are employed and are similarly formed.

The wall enclosure proper consists of a plurality of thin slabs 17. These slabs 17 are pre ared in suitable molds in quantities prior to the building of the wall, and being formec in molds the edges are inclined, so that in placing one slab 17 above the next, edge to edge, a V opening 18 is formed therebetween d both 'the l 1 and 3. The slabs 17 as best shown in Fig. 2. These slabs 17 are made up in any desired lengths, and the column molds 11 and 16 are spaced according to these predetermined slab lengths, the spac- Y d ing between the molds 11 and 16 being such that when a slab 17 is placed between any two adjacent molds, the ends of the slab 17 will extend between the flanges 15 and into the space within the sections 12, as in Fig. 5, but such that the slab ends do not contact but have an appreciable gap therebetween.

The blocks 13 above referred to are of the same, or greater thickness, as slabs 17, so that the slabs 17 may readily be positioned one above the other between the molds 11 and 16, as indicated in Fig. 4. As the slabs 17 are inserted between the molds and adjusted properly lengthwise, the blocks 13 are removed, and the bolts 14 are drawn up snugly so that the sections 12 of the mold tightly grip the slabs 17 therebetween. The bolts 14 are so positioned as to come at the lines of contact between the slabs 17 thereby passing between the slabs rather than through them.

For windows, steel frames 19 are employed, and the adjacent column molds 11 are spaced so that the frame 19 will extend to within each mold exactly as in the case of the slabs 17 as above described. The frame 19 rests on the slab below and slabs are carried on S the top of the frame on up to the desired wall height.

When all slabs are' positioned between the molds, concrete is poured into each mold and I tamped about the ends of the slabs 17 to form the columns 20 and 21.

In practice, suitable reinforcing is used in slabs and the columns, but is not here shown, as such reinforcing and its application is well known to those versed in the art, and does not form an essential part of the invention.

When the concrete has properly hardened in the molds 11 and 16, the bolts 14 are removed and the sections 12 are taken down, to leave the construction, as shown in Figs.

have been firmly secured in the columns, as has also the window frame 19, and the whole construction thereby becomes a rigidly united unit. rIvhe V- adjacent spaces between the slabs 17 may be pointed up as desired.

Bolts may be carried by the top ends of the columns 20 and 2l to secure suitable timber plates thereon, or concrete lintels may be formed between the tops of the columns.

I claim:

l. The method of building a concrete slab wall comprising the initial forming of a plurality of column molds each of said molds being formed of two sections each section having slab contacting faces spaced apart by removable blocks gripped therebetween by bolts passed through respective opposite contacting faces whereby there is a longitudinal gap left between thecontacting faces entering into the space defined within the mold sections; the setting up and aligning of the column molds in spaced relation one to the other; the insertion of the end of a slab through the gap to permit the slab to enter substantially within the column mold and theny sliding the slab in the reverse direction to enter its other end into the gap of the next mold and positioning the slab to have its ends project substantially the same distance through the gaps of the two adjacent molds into the column spaces defined therein and across the adjacent bolts; the successive similar placing of a plurality of slabs one to rest on the other between each pair of molds; the chipping away of the edges of the slabs to clear the bolts and contact the edges of the slabs; the successive removal of the mold section spacing blocks next above as the slabs are laid up the drawing of the mold sections together to have the contacting faces below grip the slab ends therebetween as the blocks above are removed; thev pouring of concrete into the column molds; and the subsequent removal of the mold sections.

2. The method of forming a wall from concrete slabs which have top and bottom edges bevelled to slope backwardly and outwardly from the front faces; of first bolting together in pairs two sections of column molds with spacing blocks between the sections, said bolts being spaced longitudinally of the molds to have their centers spaced apart distances equal to or in multiples of the sla-b heights and at intersections with the slabs; of setting up and securing the molds in the line of the proposed wall; of inserting an end of a slab etween the sections in one mold and then sliding the slab in the reverse direction to bring the opposite end between the two sections of the next adjacent mold; of the successive similar placing of slabs to the desired wall height and length; of the chipping of the bevel edges of the slabs as positioned to permit seating of the slabs over and around the mold section bolts whereby the sharp edge of the slab below is contacted by and supports the sharp edge ofthe slab next above; of the withdrawal of the mold section spacing .tended therein; and of the removal of the column mold sections by the withdrawal of the bolts therebetween. Y In testimony whereof I ath): my signaturef GEORGE L. BRADSHAW. l*

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